Answer:
The critical value can be founded in the normal standard distribution table using the value of and we got . Replacing the info given we got:
Step-by-step explanation:
For this case we have the following info given:
represent the population deviation
represent the sample mean
represent the sample size
And we want to find the margin of error for a confidence level of 95%. So then the significance level would be and . The margin of error is given by:
The critical value can be founded in the normal standard distribution table using the value of and we got . Replacing the info given we got:
Answer:
A
Step-by-step explanation:
Using the Sine rule in Δ ABC
= , substitute values
= ( cross- multiply )
BC sin38° = 3 sin66° ( divide both sides by sin38° )
BC = → A
Answer:
C
Step-by-step explanation:
Answer:
Step-by-step explanation:
parrelograpm (b*H)
40cm^2
Area of semi circle 1/2(pi)r^2
1/2(pi)(5)^2
39.26990
total?
40+39.26990=79.26990
Answer:
The degree measure of the four add up to 360 degrees. This is actually true of any quadrilateral. Let lower case letter a,b,c and d represent the angle of trapezoid ABCD. Then a+b+c+d= 360 degreees.